Water

Monitoring Program Background

•Lake Hugh Muntz Site 2 has 10 years worth of data.

•Site 2 was sampled on a quarterly basis from 10/09/2001 until the 06/04/2011.

•From 06/04/2011 until 25/05/2012, sampling was conducted on a monthly basis at four sites (Bel Air Park, Morialta Park, Warringah Park and Otway Park).

•The monitoring program now includes six sites. These six sites are sampled on a monthly basis.

Water Quality Trends

  • 10 years of water quality data (generally good quality).
  • Indications that nutrients are elevated at times.
  • Faecal coliform have been elevated at times.
  • Blue green algae have been present at times.
  • pH, dissolved oxygen, turbidity, salinity have been consistent.
  • Increased rainfall and run off from 2003 to 2012.

Latest Water Quality Results and Conclusions.

2015/2016 Water Quality Results.

2015 started off with above average rainfall but in the second half of the year and continuing into 2016, the rainfall has been well below average.

Rainfall Statistics 2015

Rainfall Statistics 2016

The lack of rain would contribute to less nutrients from properties being washed into the lake. The lack of heavy downpours has hopefully increased the efficiency of the drain litter baskets with more leaf litter being collected and again less nutrients entering the lake.

On the negative side, the lake has not received any flushing over the past year with not enough rainfall to fill the lake to overflow.

Water Visibility. Water visibility improved leading into spring but usually deteriorates through summer. With the lack of rainfall however, water clarity has remained good throughout summer and into Autumn.

Graphs below – Courtesy: City of Gold Coast Council.

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